Re: [PATCH UPDATED] jbd: Use printk_ratelimited() injournal_alloc_journal_head()

From: Jan Kara
Date: Mon Oct 04 2010 - 07:38:52 EST


On Mon 04-10-10 12:31:45, Jan Kara wrote:
> On Mon 04-10-10 19:12:13, Namhyung Kim wrote:
> > Use printk_ratelimited() instead of doing it manually.
> Thanks. I've merged the patch into my tree.
Grumble, you apparently didn't try to compile the thing... The patch
was missing #include <linux/ratelimit.h>. I've fixed that up now. Please be
more careful next time. Thanks.

Honza
>
> >
> > Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxx>
> > ---
> > fs/jbd/journal.c | 9 +++------
> > 1 files changed, 3 insertions(+), 6 deletions(-)
> >
> > diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
> > index 6f20a75..f79767d 100644
> > --- a/fs/jbd/journal.c
> > +++ b/fs/jbd/journal.c
> > @@ -1718,7 +1718,6 @@ static void journal_destroy_journal_head_cache(void)
> > static struct journal_head *journal_alloc_journal_head(void)
> > {
> > struct journal_head *ret;
> > - static unsigned long last_warning;
> >
> > #ifdef CONFIG_JBD_DEBUG
> > atomic_inc(&nr_journal_heads);
> > @@ -1726,11 +1725,9 @@ static struct journal_head *journal_alloc_journal_head(void)
> > ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS);
> > if (ret == NULL) {
> > jbd_debug(1, "out of memory for journal_head\n");
> > - if (time_after(jiffies, last_warning + 5*HZ)) {
> > - printk(KERN_NOTICE "ENOMEM in %s, retrying.\n",
> > - __func__);
> > - last_warning = jiffies;
> > - }
> > + printk_ratelimited(KERN_NOTICE "ENOMEM in %s, retrying.\n",
> > + __func__);
> > +
> > while (ret == NULL) {
> > yield();
> > ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS);
> > --
> > 1.7.0.4
> >
> --
> Jan Kara <jack@xxxxxxx>
> SUSE Labs, CR
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